Detailed Description
The invention is further illustrated by the following figures and examples:
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, or may be directly connected or indirectly connected via an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiment one:
embodiment 1 as shown in fig. 1, this embodiment provides a venting mechanism comprising an inlet valve 4, said inlet valve 4 allowing the forward passage of gas into the reservoir and not allowing the reverse passage of liquid within the reservoir through the inlet valve 4.
Preferably, the air inlet valve 4 comprises an air vent plate 42 and a sealing member 43, wherein the air vent plate 42 is provided with an air vent 422, and the sealing member 43 moves relative to the air vent plate 42 to block or open the air vent 422;
this embodiment does not include the housing 41 and barrier 5 of fig. 1.
When the seal 43 shields the vent 422, the vent 422 is closed by the seal 43 and gas cannot pass forward through the inlet valve 4. At this time, the air inlet valve 4 may be gas at the lower side and liquid at the upper side, and the liquid above the sealing member 43 applies a downward force to the sealing member 43 by its own weight, so that the sealing member 43 is in close contact with the ventilation plate 42 to seal the ventilation port 422.
When the seal 43 does not block the vent 422, the air pressure in the space above the seal 43 is low, the air pressure in the space below the seal 43 is high, and the lower air pushes the seal 43 upward at the vent 422, so that the seal 43 is separated from the state of blocking the vent 422, and the air sequentially passes through the vent 422 and the gap between the vent 422 and the seal 43 and then enters the liquid above the seal 43.
Embodiment 2 this embodiment is a further version of embodiment 1, as shown in fig. 1, which does not include the housing 41 and barrier 5 of fig. 1.
The sealing member 43 of the present embodiment includes a limiting portion 431, a fixed connecting portion 432, and a sealing portion 433, wherein the ventilation plate 42 is formed with a connecting hole 421, the fixed connecting portion 432 penetrates the connecting hole 421, the limiting portion 431 and the sealing portion 433 are respectively located at two sides of the ventilation plate 42, and the sealing portion 433 moves relative to the ventilation plate 42 to block or open the ventilation hole 422.
Preferably, the fixed connection portion 432 is fixedly connected to the limiting portion 431, and the fixed connection portion 432 is fixedly connected to the sealing portion 433.
When the gas lifts the seal 43 upward through the vent 422, the expanded stopper 431 cannot move upward from the restriction seal 43 away from the vent plate 42 through the connection hole 421. The gas passes through the air-passing plate 42 and the space of the seal 43 and then passes through the seal 433 and the space of the housing 41 into the liquid above the intake valve 4.
Embodiment 3 this embodiment is a further version based on embodiment 1 or 2, as shown in fig. 1, which does not include the housing 41 and barrier 5 parts of fig. 1.
The seal 43 is an elastic material. The sealing member 43 made of an elastic material can be more closely fitted to the ventilation plate 42, thereby preventing air leakage or weeping from the gap between the ventilation plate 42 and the sealing member 43.
Preferably, the elastic material is TPU, TPE, TPR, TPV, CPE, plastic or rubber.
Embodiment 4 this embodiment is a further version of embodiment 3, as shown in fig. 1, which does not include the housing 41 and barrier 5 of fig. 1.
The limiting portion 431, the fixed connection portion 432, and the sealing portion 433 are integrally formed.
The tapered elastic limiting portion 431 may be deformed by being pressed through the connecting hole 421 during installation, and restore to its original shape after passing through the connecting hole 421, and the limiting portion 431 is limited to leave the connecting hole 421 by the tapered bottom surface.
Embodiment 5 this embodiment is a further version of any one of embodiments 1 to 4 as shown in figure 1, this embodiment comprising a barrier 5 in figure 1.
The venting mechanism further comprises a barrier 5, the barrier 5 being used to control the on and off of gas passing positively through the venting mechanism into the reservoir;
Preferably, the relative position of the blocking piece 5 and the ventilation plate 42 is changed to control the on-off of the gas which enters the reservoir through the ventilation mechanism, and the blocking piece 5 is used for blocking the gas from passing through the ventilation holes 422 on the ventilation plate 42 or stopping blocking the gas from passing through the ventilation holes 422 on the ventilation plate 42 through the change of the position.
Preferably, the barrier 5 is made of an elastic material.
Embodiment 6 this embodiment is a further embodiment based on embodiment 5, as shown in figure 1. The present embodiment does not include the housing 41 and the like in fig. 1.
The barrier 5 may be adhesive on one side, and the vent 422 is blocked by the barrier 5 by adhering the adhesive side of the barrier 5 to the vent plate 42 so that gas cannot pass through the vent 422 on the vent plate 42.
Vent 422 is opened by removing barrier 5 from vent plate 42. It is through the vent 422 that gas can pass.
Preferably, the adhesive on the barrier member 5 may be repeatedly applied a plurality of times.
Embodiment 7 this embodiment is a further embodiment based on embodiment 5, as shown in figures 1 to 4.
The air inlet valve 4 also comprises a shell 41, an air vent plate 42 is arranged in the shell 41, and the shell 41 and the air vent plate 42 are integrally formed;
the barrier 5 translates and/or rotates axially relative to the housing 41 to block or unblock the vent 422.
Embodiment 8 this embodiment is a further embodiment based on embodiment 7, as shown in figure 1. This embodiment comprises the housing 41 and the barrier 5 of fig. 1.
The blocking member 5 translates axially relative to the housing 41.
The blocking member 5 is inserted into the intake opening of the intake valve 4 and/or is sleeved outside the intake opening of the intake valve 4.
Preferably, the barrier 5 is made of an elastic material, and the barrier 5 may be in close contact with the housing 41 to prevent air leakage from a gap between the barrier 5 and the housing 41.
The blocking piece 5 is pulled out, and the air inlet of the air inlet valve 4 is contacted with the outside air. The blocking member 5 is inserted into the housing 41 to block the air inlet of the air inlet valve 4, i.e., the air vent 422 is not in contact with the air outside the air inlet valve 4.
Embodiment 9 As shown in FIG. 4, this embodiment is a further embodiment based on embodiment 8.
The blocking member 5 comprises a blocking member limiting portion 59, a blocking member fixed connection portion 58 and a blocking member sealing portion 57, wherein two ends of the blocking member fixed connection portion 58 are respectively fixedly connected with the blocking member limiting portion 59 and the blocking member sealing portion 57. Preferably, the barrier stopper portion 59, the barrier fixed connection portion 58, and the barrier sealing portion 57 are integrally formed.
The barrier vent plate 56 is inside the housing 41 and fixedly connected with the housing 41, the barrier vent plate 56 is formed with a barrier vent 561, the barrier vent plate 56 is formed with a barrier connection hole 562, and the barrier vent plate 56 is closer to the intake port of the intake valve 4 than the vent plate 42. The blocking member fixing connection portion 58 moves in the blocking member connection hole 562 and in the blocking member connection hole 562. The tapered and resilient stopper 59 is capable of being deformed by being pressed through the stopper connecting hole 562 during installation, and is restored to its original shape by the stopper connecting hole 562, and the stopper 59 is restricted from moving downward by the tapered bottom surface. Thereby preventing the barrier 5 from being lost by the barrier 5 being completely removed from the housing 41.
Preferably, the barrier seal 57 is fixedly secured to the pull 50.
When in use, the air inlet of the air inlet valve 4 is downward, the air outlet is upward, the blocking piece 5 is below, and the air inlet valve 4 is above.
At this time, liquid is present above the intake valve 4 (at the air outlet), and gas is present below the intake valve 4 (at the air outlet). The sealing member 43 is pressed against the ventilation plate 42 by the gravity of the liquid itself, and the ventilation port 422 is closed, so that the liquid does not flow downward through the intake valve 4.
In the sealed state, the blocking member sealing portion 57 is inserted into or fitted with the air inlet of the air inlet valve 4 to isolate the air inlet of the air inlet valve 4 from the outside air. When in use, the pulling piece 50 is pulled to drive the blocking piece 5 to move downwards, the blocking piece sealing part 57 and the air inlet of the air inlet valve 4 generate a gap, and the air inlet of the air inlet valve 4 is contacted with the outside air. The pulled-out blocking member 5 continues to move downward due to gravity, and the blocking member stopper 59 limits the stroke of the downward movement of the blocking member 5. There is a pressure difference between the upper and lower sides of the air inlet valve 4, and the air sequentially passes through the gap between the blocking member sealing portion 57 and the air inlet of the air inlet valve 4 and the air inlet of the air valve 4 to enter the air vent 422, and the air pushes up the sealing member 43 through the air vent 422, so that the expanded limiting portion 431 cannot move upward from the limiting sealing member 43 to leave the air vent plate 42 through the connecting hole 421. The air passes through the gaps of the ventilation plate 42 and the sealing member 43, passes through the gaps of the sealing member 43 and the casing 41, enters the air outlet of the air inlet valve 4, and enters the liquid above the air inlet valve 4 from the air outlet, so as to balance the air pressure difference above and below the air inlet valve 4.
Embodiment 10 this embodiment is a further embodiment based on embodiment 7, as shown in fig. 3.
The blocking member 5 rotates relative to the housing 41.
Preferably, a cover plate is formed at the air inlet of the air inlet valve 4, the cover plate is formed with an air inlet opening 411, and the air inlet of the air inlet valve 4 is fed from the air inlet opening 411. A second opening 53 is formed at the end face of the barrier 5, and the inner side of the end face of the barrier 5 is in contact with the outer side of the cover plate.
Preferably, the barrier 5 is made of an elastic material, which acts as a seal against the air inlet opening 411.
When in use, the air inlet of the air inlet valve 4 is downward, the air outlet is upward, the blocking piece 5 is below, and the air inlet valve 4 is above.
At this time, liquid is present above the intake valve 4 (at the air outlet), and gas is present below the intake valve 4 (at the air outlet). The sealing member 43 is pressed against the ventilation plate 42 by the gravity of the liquid itself, and the ventilation port 422 is closed, so that the liquid does not flow downward through the intake valve 4.
In the sealed state, the air inlet opening 411 and the second opening 53 do not overlap, and the barrier 5 completely shields the air inlet opening 411. The barrier 5 is rotated so that the intake opening 411 and the second opening 53 overlap, and the intake opening 411 is brought into contact with the outside air, whereby the intake port of the intake valve 4 is brought into contact with the outside air.
Embodiment 11 this embodiment is a further embodiment based on embodiment 7, as shown in fig. 2. The threads of the barrier 5 and the housing 41 are not shown in fig. 2. The barrier 5 does not comprise the first opening 52 in fig. 2.
The blocking member 5 axially translates and rotates relative to the housing 41, i.e. the blocking member 5 moves both axially and circumferentially relative to the housing 41.
The blocking member 5 is screwed into the air inlet of the air inlet valve 4 or is sleeved outside the air inlet of the air inlet valve 4 and is in threaded connection.
Preferably, the blocking member 5 or the air inlet valve 4 is provided with a sealing ring 55, said sealing ring 55 being arranged between the blocking member 5 and the air inlet valve 4 for sealing the gap of the blocking member 5 or the air inlet valve 4.
The blocking member 5 is completely unscrewed from the inlet valve 4, and the inlet of the inlet valve 4 is in contact with the outside air. After the blocking piece 5 is in threaded connection with the air inlet valve 4, the air inlet of the air inlet valve 4 is isolated from the outside air.
Embodiment 12 this embodiment is a further embodiment based on embodiment 11, as shown in fig. 2. The threads of the barrier 5 and the housing 41 are not shown in fig. 2.
The barrier 5 is provided with a first opening 52.
The blocking member 5 is rotated such that the blocking member 5 moves downward such that the first opening 52 exceeds the air inlet of the air inlet valve 4, and the air inlet of the air inlet valve 4 is in contact with the outside air. After gas enters the inlet of the inlet valve 4 from the first opening 52, the gas lifts the seal 43 upward through the vent 422. The first opening 52 is rotated upwardly so that the first opening 52 reaches above the intake port of the intake valve 4, and preferably, the gasket 55 is now in contact with the housing 41 to seal the intake port of the intake valve 4.
Embodiment 13:
As shown in fig. 23 to 27, this embodiment is a further embodiment based on embodiment 7. The venting mechanism comprises an inlet valve 4 and a barrier 5, the inlet valve 4 comprising a seal 43 in the inlet valve 4 and moving relative to the inlet valve 4 to open or close a vent 422 of the inlet valve 4, the barrier 5 being used to control the on and off of gas that is being passed through the venting mechanism into the spray gun liquid reservoir cap.
Preferably, the shutter 5 is connected in rotation with the inlet valve 4 to open or close the inlet valve 4.
Preferably, the air inlet valve 4 comprises an air vent plate 42 and an outer shell 44, the air vent plate 42 is provided with an air vent 422, and the sealing member 43 moves relative to the air vent plate 42 to open or close the air vent 422;
Preferably, the rotation axis of the blocking member 5 is not parallel to the moving direction of the sealing member 43;
more preferably, the rotation axis of the blocking member 5 is perpendicular to the moving direction of the sealing member 43.
Preferably, the sealing member 43 comprises a limiting part 431, a fixed connecting part 432 and a sealing part 433, wherein the ventilation plate 42 is provided with a connecting hole 421, the fixed connecting part 432 penetrates through the connecting hole 421, and the limiting part 431 and the sealing part 433 are respectively positioned at two sides of the ventilation plate 42;
Preferably, the limiting portion 431, the fixed connection portion 432 and the sealing portion 433 are integrally formed and made of an elastic material;
more preferably, the elastic material is TPU, TPE, TPR, TPV, CPE, plastic or rubber.
Preferably, the blocking piece 5 further comprises an outer fixing part 5c, wherein the outer fixing part 5c is arranged outside the inner sealing part 5a and the outer sealing part 5b, the outer fixing part 5c is rotatably connected with the outer shell 44, and the outer fixing part 5c is fixed with the outer shell 44 through interference fit.
Preferably, the outer case 44 is formed with a first hinge portion 442, the outer fixing portion 5c is formed with a second hinge portion 532, and the first hinge portion 442 is connected with the second hinge portion 532 to hinge the outer case 44 and the outer fixing portion 5 c;
preferably, the outer fixing portion 5c is formed with a second air vent 431, and the second air vent 431 is in communication with the air outside the air intake valve 4 when the barrier 5 is opened.
When the liquid is above the sealing part 433 and the gas is below the sealing part, the sealing part 433 is pressed on the ventilation plate 42 by the gravity of the paint to block and close the ventilation opening 422, so that the paint is prevented from flowing downwards from the ventilation opening 422.
The air inlet valve 4 further comprises a shell 41, the air vent 422 is communicated with the inside of the shell 41, the blocking piece 5 comprises an inner sealing part 5a penetrating through the inside of the shell 41 to seal the opening of the shell 41 and/or an outer sealing part 5b sleeved outside the shell 41 to seal the opening of the shell 41, and the inner sealing part 5a and the outer sealing part 5b are in interference fit or transition fit with the shell 41.
Preferably, the interference of the inner sealing part 5a is larger than that of the outer sealing part 5b, and the height of the inner sealing part 5a is smaller than that of the outer sealing part 5 b.
Preferably, the outer sealing part 5b is formed with a first air vent 421 through which air passes, the first air vent 421 being in communication with air outside the air intake valve 4 when the barrier 5 is opened, the outer fixing part 43 is formed with a second air vent 431, the second air vent 431 being in communication with air outside the air intake valve 4 when the barrier 5 is opened, and the first air vent 421 and the second air vent 431 being in communication.
Preferably, the barrier 5 is formed with a depressed pressing portion 501.
More preferably, the outer case 44 is formed with a pressing groove 231, and the pressing groove 231 and the pressing part 501 are on the same side of the first hinge 442 and the second hinge 532;
preferably, the housing 41, the ventilation plate 42 and the outer housing 44 are integrally formed and made of an elastic material, and preferably, the inner sealing part 5a, the outer sealing part 5b and the outer fixing part 43 are integrally formed and made of an elastic material, and the elastic material is PE, PP, PC, PVC, PPR, abs plastic, PS plastic, PMMA plastic, POM plastic, PA plastic, PPO plastic, PSU plastic, PTFE plastic, ASA plastic, PPS plastic, ETFE plastic, epoxy resin, silicone plastic and rubber.
The housing 41 is provided to further seal the intake valve 4, and external air must first pass through the interference fit seal between the outer fixing portion 43 and the outer housing 44, and then pass through the interference fit seal between the inner sealing portion 5a and the housing 41 to enter the air vent 22. The outer seal portion 5b functions to fix and hold the movement locus of the blocking member 5 at the time of rotation with the housing 1.
The inner seal portion 5a, the outer seal portion 5b, and the outer fixing portion 43 are deformed by being pressed against the housing 41 and the outer housing 44 when the barrier 5 is opened or closed.
Embodiment 14
As shown in fig. 20 to 22, the vent mechanism includes a seal 43, and the seal 43 opens and closes the vent mechanism by a change in shape.
Preferably, the sealing member 43 is made of an elastic material, a plurality of openings 433a capable of being changed in size by elastic deformation are formed in the sealing member 43, and the sealing member 43 opens or closes the ventilation mechanism by opening and closing the openings 433 a.
Preferably, the sealing member 43 includes a sealing portion 433, the opening 433a is formed on the sealing portion 433, the sealing portion 433 is a hollow cone, and the sealing portion 433 is a revolution body.
Preferably, the generatrix of the sealing part 433 is a curved line curved in the central axis direction of the sealing part 433.
Preferably, the openings 433a are circumferentially arranged along a central axis of the sealing portion 433. Preferably, the openings 433a are uniformly circumferentially arranged along the central axis of the sealing portion 433
Preferably, the sealing member 43 further includes a limiting portion 431, and the sealing portion 433 is integrally formed with the limiting portion 431.
Preferably, the elastic material is TPU, TPE, TPR, TPV, CPE, plastic or rubber.
Working principle:
When the paint is above the vent mechanism, the paint is pressed above the side surface of the sealing member 43 by the gravity of the paint, so that the sealing portion 433 deforms, the bus of the sealing portion 433 is further bent towards the central axis direction of the sealing portion 433, and all the openings 433a are closed (namely, the sealing portions 433 on two sides of the openings 433a are pressed together to close the sealing portion 433), so that the paint is prevented from flowing downwards through the sealing portion 433.
When the air pressure outside the tip of the sealing part 433 is low and the air pressure at the bottom of the sealing part 433 is high, the air pushes the opening 433a open (i.e., the sealing part 433 is forced to elastically deform to enlarge the sealing part 433), so that the outside air can pass through the opening 433a.
Fixing mode one of the seal 43:
The seal portion 433 of the seal 43 is directly bonded and fixed.
Second mode of fixing the seal 43:
the stopper 431 of the seal 43 is directly bonded and fixed.
Fixing manner three of the seal 43:
the ventilation mechanism further comprises a shell 41, the shell 41 is fixedly connected with the bottom of the cup body 1, and the limiting part 431 of the sealing piece 43 is arranged in the shell 41 and is clamped and fixed with the shell 41.
Fourth mode of fixing the seal 43:
the ventilation mechanism further comprises a shell 41 and a fixing piece 8, wherein a through hole is formed in the fixing piece 8, the fixing piece 8 is fixedly connected with the shell 41, and the limiting part 431 of the sealing piece 43 is pressed and fixed in the shell 41.
The stopper 431 is a protruding portion of the seal 43. Preferably, the limiting portion 431 is a flange. The housing 41 is a hollow cylinder with an inner boss formed at one end.
Preferably, the fixing member 8 is fixed to the housing 41 by clamping, bonding or welding.
Embodiment two:
Embodiment 15:
As shown in fig. 5 to 12 and 14 to 19, the present embodiment provides a spray gun liquid reservoir closure comprising a cap 1, a liquid passage 11 being formed in the cap 1, a venting mechanism being provided in the cap 1 to allow positive passage of gas into the reservoir and not to allow reverse passage of liquid within the reservoir.
The vent mechanism of this embodiment may employ the vent mechanisms of all embodiments of example one.
Preferably, the cup cover 1 is funnel-shaped, and the liquid channel 11 is at the thin mouth end of the funnel shape.
When the embodiment of example one without the housing 41 is used in this embodiment, the vent plate 42 is integrally formed with the cap 1.
When the embodiment of the present embodiment is the embodiment of example one having the housing 41, the housing 41 is integrally formed with the cap 1.
Embodiment 16:
as shown in fig. 8 to 10, this embodiment is a further embodiment based on embodiment 15.
The cup cover 1 is formed with a plane 10, one side surface of the ventilation plate 42 is located on the same plane with one side surface of the plane 10, and the sealing part 433 is simultaneously contacted with the ventilation plate 42 and the plane 10 to shield the ventilation hole 422.
As shown in fig. 9, the liquid flows out in the direction in which the liquid passes through the gap between the sealing portion 433 and the flat surface 10, flows into the vent 422, and finally flows out of the vent 422. Since the sealing portion 433 is outside the housing 41, the area of the sealing portion 433 may be larger than the inner cavity cross-sectional area of the housing 41, so that the area of the sealing portion 433 attached to the housing is increased, and the gap between the sealing portion 433 and the plane 10 may be longer, thereby lengthening the flow distance of the liquid before flowing into the vent 422, preventing the liquid from flowing out, and increasing the tightness of the intake valve 4.
And as shown in fig. 1 to 4 and 18, the vent plate 42 and the seal 433 are both located inside the housing 41. The area of the sealing part 433 can only be the same as the inner cavity cross-sectional area of the shell 41 at maximum, the area of the sealing part 433 attached to the ventilation plate 42 is small, and the gap between the sealing part 433 and the ventilation plate 42 is limited and cannot be lengthened, so that the flowing distance of liquid before flowing into the ventilation port 422 is short, the liquid flows out more easily, and the air inlet valve 4 has poor tightness.
The vent 422 of fig. 9 is located at the edge of the vent plate 42, the vent 422 being formed by the vent plate 42 and the housing 41 or the planar surface 10 together. Therefore, when the intake valve 4 is sealed in fig. 9, the part of the sealing part 433 between the outer edge of the sealing part 433 and the vent 422 is attached only to the surface of the flat surface 10. When the vent plate 42 of fig. 9 adopts the vent plate 42 in which the vent 422 is completely in the vent plate 42 as shown in fig. 1 to 4 and 18, then a part of the seal 433 from the outer edge of the seal 433 to the vent 422 can be attached to the plane 10 and the surface of the vent plate 42 at the same time, further increasing the attaching area of the seal 433, lengthening the flowing distance of the liquid before flowing into the vent 422, and increasing the tightness of the intake valve 4.
Embodiment 17:
as shown in fig. 5 to 12 and fig. 14 to 19, the present embodiment is a further embodiment based on embodiment 15 or embodiment 16.
The blocking piece 5 is connected with the cup cover 1 through a connecting piece 51;
preferably, one end of the connecting piece 51 is fixedly connected or rotationally connected with the blocking piece 5, and the other end is fixedly connected or rotationally connected with the cup cover 1
More preferably, the connecting member 51 is made of an elastic material.
More preferably, the blocking member 5, the connecting member 51 and the cup cover 1 are integrally formed;
the connecting piece 51 is used for limiting the displacement distance between the blocking piece 5 and the cup cover 1, so that the blocking piece 5 is prevented from being completely separated from the cup cover 1 to cause the blocking piece 5 to be lost.
Embodiment 18:
As shown in fig. 14 to 18, the present embodiment is a further embodiment based on any one of embodiments 15 to 17.
The liquid passage 11 is connected to the liquid passage seal 6, and the liquid passage seal 6 opens or closes the liquid passage 11.
Preferably, the liquid channel seal 6 is made of an elastic material.
Preferably, the liquid channel seal 6 is connected to the cap 1 by a liquid channel seal connector 61.
Preferably, the liquid channel sealing member connecting member 61 is made of a bendable material or structure, one end of the liquid channel sealing member connecting member 61 is fixedly connected with the liquid channel sealing member 6, and the other end is fixedly connected with the cup cover 1.
The use of the liquid channel seal connector 61 limits the displacement distance of the liquid channel seal 6 from the cap 1, preventing the liquid channel seal connector 61 from being completely disengaged from the cap 1, resulting in loss of the liquid channel seal 6.
Embodiment 19:
As shown in fig. 5 to 10, the present embodiment is a further embodiment based on any one of embodiments 15 to 18.
The outer circumference of the cup cover 1 transversely extends outwards to form a first horizontal ring 15, the outer edge of the first horizontal ring 15 vertically extends upwards to form a first vertical ring 12, the upper edge of the first vertical ring 12 transversely extends outwards to form a second horizontal ring 14, and the outer edge of the second horizontal ring 14 vertically extends downwards to form a second vertical ring 13 for locking the reservoir.
The first vertical ring 12 and the first horizontal ring 15 extending vertically upwards serve to enable the funnel-shaped cup cover 1 to sink, so that the occupied volume of the sealing cover is reduced, and transportation and storage are facilitated.
Embodiment 20:
as shown in fig. 5 to 10, this embodiment is a further embodiment based on embodiment 19.
Preferably, the outer edge of the first horizontal ring 15 extends vertically upwards and simultaneously extends downwards to form a first vertical ring 12 together, one side of the first vertical ring 12, which is close to the second vertical ring 13, forms a flange 121 surrounding the first vertical ring 12, the flange 121 is used for being clamped and fixed with the soft storage cup 3, and preferably, the cup cover 1, the first horizontal ring 15, the second horizontal ring 14, the first vertical ring 12 and the second vertical ring 13 are molded integrally.
In use, the second vertical ring 13, which is formed with an internal thread, is screwed with the hard storage cup 2, which is formed with an external thread. The flange 121 of the first vertical ring 12 is clamped and fixed with the soft storage cup 3.
Embodiment 21:
as shown in fig. 11 to 18, the present embodiment is a further embodiment based on any one of embodiments 15 to 18.
The inner side below the cup cover 1 is provided with a first vertical ring 12, and the outer side below the cup cover 1 is provided with a second vertical ring 13 for locking a reservoir.
Preferably, a flange is formed on the outer side of the first vertical ring 12, and is clamped and fixed with the soft storage cup 3, and preferably, the cup cover 1, the first vertical ring 12 and the second vertical ring 13 are integrally molded by injection molding.
Preferably, the reservoir comprises a rigid reservoir cup 2, the rigid reservoir cup 2 being detachably connected to the closure, preferably the rigid reservoir cup 2 being connected to the closure by a second vertical ring 13.
Embodiment 22:
As shown in fig. 19, this embodiment is a further embodiment based on any one of embodiments 15 to 18.
A first vertical ring 12 is formed on the inner side below the cup cover 1.
Preferably, a flange is formed on the outer side of the first vertical ring 12, and the flange is clamped and fixed with the soft storage cup 3.
Embodiment III:
embodiment 23:
as shown in fig. 5 to 19, the present embodiment provides a spray gun liquid reservoir comprising a cap and a reservoir, the cap comprising a cap 1, a liquid passage 11 being formed in the cap 1, characterised in that a venting mechanism is provided in the cap 1 to allow positive passage of gas into the reservoir and not to allow reverse passage of liquid within the reservoir.
The vent mechanism of this embodiment may employ the vent mechanisms of all embodiments of example one.
The closure of this embodiment may employ the closures of all embodiments of example two.
Embodiment 24:
As shown in fig. 5 to 19, this embodiment is a further embodiment based on embodiment 23.
The reservoir comprises a rigid reservoir cup 2, the rigid reservoir cup 2 being detachably connected to the closure. The hard storage cup 2 is closed, namely, the bottom surface and the side surface of the hard storage cup 2 are not provided with openings, and only the connection part between the upper part of the hard storage cup 2 and the sealing cover is provided with an opening.
In the closure with the second vertical ring 13, the rigid reservoir cup 2 is connected to the closure by the second vertical ring 13.
Preferably, the second vertical ring 13 is formed with an internal thread, the hard storage cup 2 is formed with an external thread, and the hard storage cup 2 is screwed with the second vertical ring 13.
In the cover without the second vertical ring 13, the cover also comprises a retaining ring 7, the retaining ring 7 is in threaded connection with the hard storage cup 2, the retaining ring 7 is contacted with the upper part of the cup cover 1, and the retaining ring 7 and the hard storage cup 2 respectively limit the movement of the cup cover 1 in two directions in the axial direction.
In the first mode, the paint is stored by using the hard storage cup 2
When paint is stored using the hard storage cup 2, the hard storage cup 2 is a closed type hard storage cup 2.
The hard storage cup 2 is detachably connected with the cup cover 1 through threads or other forms. When the hard storage cup 2 is closed, a closed cavity is formed in the cup cover 1 and the hard storage cup 2 and isolated from the outside air.
Paint spraying by using a hard storage cup 2
As shown in fig. 17, the bottom of the hard storage cup 2 is closed in the present usage method, and the vent cover 21 in fig. 17 is not included. The blocking piece 5 is adjusted so that the blocking piece 5 does not close the air inlet valve 4 any more, and the air inlet of the air inlet valve 4 is communicated with the outside. The inside of the closed hard storage cup 2 is isolated from the outside air. The spray gun is connected to the liquid channel 11. The soft storage cup 3 is not mounted. The reservoir is rotated until the cap 1 faces downward and the rigid reservoir cup 2 faces upward.
At this time, as paint is ejected from the spray gun, vacuum is generated in the hard storage cup 2 above the air inlet valve 4, air enters the air vent 422 through the air inlet of the air inlet valve 4, the air lifts the seal 43 upward through the air vent 422, and the expanded stopper 431 cannot move upward from the restriction seal 43 to leave the air vent plate 42 through the connection hole 421. The gas passes through the gap between the ventilation plate 42 and the sealing member 43, passes through the gap between the sealing member 43 and the housing 41, enters the gas outlet of the gas inlet valve 4, and enters the hard storage cup 2 above the gas inlet valve 4 from the gas outlet, so as to balance the pressure above and below the gas inlet valve 4. At this time, although the intake valve 4 is opened, paint does not flow downward from the intake valve due to the bottom-up air flow.
Embodiment 25:
As shown in fig. 5 to 19, this embodiment is a further embodiment based on embodiment 23.
The reservoir comprises a rigid reservoir cup 2, which rigid reservoir cup 2 is detachably connected to the closure, preferably the rigid reservoir cup 2 is connected to the closure by means of a second vertical ring 13.
The reservoir further comprises a soft reservoir cup 3, wherein the soft reservoir cup 3 is sleeved in the hard reservoir cup 2 and is used for containing paint.
Preferably, the cup body of the hard storage cup 2 is open or closed. The hard storage cup 2 is closed, namely, the bottom surface and the side surface of the hard storage cup 2 are not provided with openings, and only the connection part between the upper part of the hard storage cup 2 and the sealing cover is provided with an opening. The hard storage cup 2 is open, i.e. the bottom surface and/or the side surface of the hard storage cup 2 are provided with openings to balance the internal and external air pressure of the hard storage cup 2 and reduce the material and weight of the hard storage cup 2.
Preferably, the bottom surface of the open-type hard storage cup 2 is provided with a vent opening 20, and the side surface of the open-type hard storage cup 2 is provided with a side vent opening 23.
The third mode of use is that the soft storage cup 3 stores paint
The cup body of the hard storage cup 2 is open or closed.
As shown in fig. 14, 15 and 18, the soft storing cup 3is filled with paint. The liquid channel seal 6 closes the liquid channel 11 so that gas does not enter the inner soft storage cup 3 via the liquid channel 11. While closing the inlet valve 4 with a barrier 5.
The soft storage cup 3 is connected with the cup cover 1 in a detachable connection mode such as clamping and the like, and the cup cover 1 is airtight with the soft storage cup 3. So that paint can be stored in the soft storing cup 3. The rigid storage cup 2 serves as a grip and support.
The use mode is four, the soft storage cup 3 is used for spraying paint at a fixed angle
The cup body of the hard storage cup 2 is open or closed.
As shown in fig. 8 and 16, the blocking member 5 is adjusted such that the blocking member 5 no longer closes the intake valve 4, and the intake port of the intake valve 4 communicates with the outside. The hard storage cup 2 is not used. The spray gun is connected to the liquid channel 11. The reservoir is rotated until the cap 1 faces downward and the soft reservoir cup 3 faces upward. The soft storage cup 3 is fixed on the cup cover 1, and the soft storage cup 3 and the cup cover 1 are hermetically sealed.
At this time, as paint is ejected from the spray gun, vacuum is generated in the soft storage cup 3 above the air inlet valve 4, air enters the air vent 422 through the air inlet of the air inlet valve 4, the air lifts the seal 43 upward through the air vent 422, and the expanded stopper 431 cannot move upward from the restriction seal 43 to leave the air vent plate 42 through the connection hole 421. The air passes through the gaps of the ventilation plate 42 and the sealing member 43, passes through the gaps of the sealing member 43 and the shell 41, enters the air outlet of the air inlet valve 4, and enters the soft storage cup 3 above the air inlet valve 4 from the air outlet, so that the pressure on the upper side and the lower side of the air inlet valve 4 is balanced. At this time, although the intake valve 4 is opened, paint does not flow downward from the intake valve due to the bottom-up air flow. The rigid storage cup 2 serves as a grip and support.
The fifth mode of use is to spray paint at any angle by using the soft storage cup 3
The hard storage cup 2 is open or the hard storage cup 2 is not attached.
As shown in fig. 15, the vent opening 20 opens to allow the interior of the hard cup 2 to communicate with the outside air. The barrier 5 closes the inlet valve 4. The spray gun is connected to the liquid channel 11. The soft storage cup 3 is fixed on the cup cover 1, and the soft storage cup 3 and the cup cover 1 are hermetically sealed.
At this time, as paint is ejected from the spray gun, the soft storage cup 3 made of soft plastic is continuously contracted toward the liquid passage 11. In this way, the reservoir can be rotated at any angle and paint can be ejected from the gun. The soft storage cup 3 can be discarded after use.
When the cup body of the hard cup 2 is closed, the cover may be attached only to the hard cup 2, and the method of the second embodiment is used in the manner of the second embodiment 21.
Embodiment 26:
as shown in fig. 13 to 18, this embodiment is a further embodiment based on embodiment 25.
The hard storage cup 2 is open, and the hard storage cup 2 is provided with a vent opening 20 only on the bottom surface, and the vent opening 20 is detachably connected with a vent cover 21.
When the vent cover 21 is attached to the vent opening 20, the vent cover 21 closes the bottom of the hard storage cup 2, which corresponds to the closed hard storage cup 2. In this case, the method can be used in any one of the methods one to four.
When the vent cover 21 is separated from the vent opening 20, the bottom of the hard cup 2 is opened, which corresponds to the open hard cup 2. At this time, any one of the three to five methods of use may be used.
Embodiment 27:
as shown in fig. 8 to 10, the present embodiment is a further embodiment based on embodiment 25 or 26.
The top edge of the soft serve cup 3 at the opening forms a support edge 31.
The periphery of the upper end opening of the soft storage cup 3 is provided with a supporting edge 31, and the upper end opening of the hard storage cup 2 is provided with a blank holder 22. When the soft storage cup 3 is fixed, the supporting edge 31 is arranged between the second horizontal ring 14 and the blank holder 22 of the hard storage cup 2, and the supporting edge 31 of the soft storage cup 3 is pressed and fixed by the second horizontal ring 14 and the blank holder 22. The soft storage cup 3 can be more reliable than the soft storage cup which is only fixed by clamping and is not easy to fall off.
The present invention has been described above by way of example, but the present invention is not limited to the above-described embodiments, and any modifications or variations based on the present invention fall within the scope of the present invention.